Merge branch 'perf/urgent' into perf/core (cce91317) · Commits · e / devices / android_kernel_oneplus_sm7250

Documentation/DocBook/libata.tmpl

+16 −33

Original line number	Original line	Diff line number	Diff line
	@@ -107,10 +107,6 @@ void (dev_config) (struct ata_port , struct ata_device *);
	issue of SET FEATURES - XFER MODE, and prior to operation.		issue of SET FEATURES - XFER MODE, and prior to operation.
	</para>		</para>
	<para>		<para>
	Called by ata_device_add() after ata_dev_identify() determines
	a device is present.
	</para>
	<para>
	This entry may be specified as NULL in ata_port_operations.		This entry may be specified as NULL in ata_port_operations.
	</para>		</para>

	@@ -154,8 +150,8 @@ unsigned int (mode_filter) (struct ata_port , struct ata_device *, unsigned in

	<sect2><title>Taskfile read/write</title>		<sect2><title>Taskfile read/write</title>
	<programlisting>		<programlisting>
	void (tf_load) (struct ata_port ap, struct ata_taskfile *tf);		void (sff_tf_load) (struct ata_port ap, struct ata_taskfile *tf);
	void (tf_read) (struct ata_port ap, struct ata_taskfile *tf);		void (sff_tf_read) (struct ata_port ap, struct ata_taskfile *tf);
	</programlisting>		</programlisting>

	<para>		<para>
	@@ -164,36 +160,35 @@ void (tf_read) (struct ata_port ap, struct ata_taskfile *tf);
	hardware registers / DMA buffers, to obtain the current set of		hardware registers / DMA buffers, to obtain the current set of
	taskfile register values.		taskfile register values.
	Most drivers for taskfile-based hardware (PIO or MMIO) use		Most drivers for taskfile-based hardware (PIO or MMIO) use
	ata_tf_load() and ata_tf_read() for these hooks.		ata_sff_tf_load() and ata_sff_tf_read() for these hooks.
	</para>		</para>

	</sect2>		</sect2>

	<sect2><title>PIO data read/write</title>		<sect2><title>PIO data read/write</title>
	<programlisting>		<programlisting>
	void (data_xfer) (struct ata_device , unsigned char *, unsigned int, int);		void (sff_data_xfer) (struct ata_device , unsigned char *, unsigned int, int);
	</programlisting>		</programlisting>

	<para>		<para>
	All bmdma-style drivers must implement this hook. This is the low-level		All bmdma-style drivers must implement this hook. This is the low-level
	operation that actually copies the data bytes during a PIO data		operation that actually copies the data bytes during a PIO data
	transfer.		transfer.
	Typically the driver		Typically the driver will choose one of ata_sff_data_xfer_noirq(),
	will choose one of ata_pio_data_xfer_noirq(), ata_pio_data_xfer(), or		ata_sff_data_xfer(), or ata_sff_data_xfer32().
	ata_mmio_data_xfer().
	</para>		</para>

	</sect2>		</sect2>

	<sect2><title>ATA command execute</title>		<sect2><title>ATA command execute</title>
	<programlisting>		<programlisting>
	void (exec_command)(struct ata_port ap, struct ata_taskfile *tf);		void (sff_exec_command)(struct ata_port ap, struct ata_taskfile *tf);
	</programlisting>		</programlisting>

	<para>		<para>
	causes an ATA command, previously loaded with		causes an ATA command, previously loaded with
	->tf_load(), to be initiated in hardware.		->tf_load(), to be initiated in hardware.
	Most drivers for taskfile-based hardware use ata_exec_command()		Most drivers for taskfile-based hardware use ata_sff_exec_command()
	for this hook.		for this hook.
	</para>		</para>

	@@ -218,8 +213,8 @@ command.

	<sect2><title>Read specific ATA shadow registers</title>		<sect2><title>Read specific ATA shadow registers</title>
	<programlisting>		<programlisting>
	u8 (check_status)(struct ata_port ap);		u8 (sff_check_status)(struct ata_port ap);
	u8 (check_altstatus)(struct ata_port ap);		u8 (sff_check_altstatus)(struct ata_port ap);
	</programlisting>		</programlisting>

	<para>		<para>
	@@ -227,20 +222,14 @@ u8 (check_altstatus)(struct ata_port ap);
	hardware. On some hardware, reading the Status register has		hardware. On some hardware, reading the Status register has
	the side effect of clearing the interrupt condition.		the side effect of clearing the interrupt condition.
	Most drivers for taskfile-based hardware use		Most drivers for taskfile-based hardware use
	ata_check_status() for this hook.		ata_sff_check_status() for this hook.
	</para>
	<para>
	Note that because this is called from ata_device_add(), at
	least a dummy function that clears device interrupts must be
	provided for all drivers, even if the controller doesn't
	actually have a taskfile status register.
	</para>		</para>

	</sect2>		</sect2>

	<sect2><title>Select ATA device on bus</title>		<sect2><title>Select ATA device on bus</title>
	<programlisting>		<programlisting>
	void (dev_select)(struct ata_port ap, unsigned int device);		void (sff_dev_select)(struct ata_port ap, unsigned int device);
	</programlisting>		</programlisting>

	<para>		<para>
	@@ -251,9 +240,7 @@ void (dev_select)(struct ata_port ap, unsigned int device);
	</para>		</para>
	<para>		<para>
	Most drivers for taskfile-based hardware use		Most drivers for taskfile-based hardware use
	ata_std_dev_select() for this hook. Controllers which do not		ata_sff_dev_select() for this hook.
	support second drives on a port (such as SATA contollers) will
	use ata_noop_dev_select().
	</para>		</para>

	</sect2>		</sect2>
	@@ -441,13 +428,13 @@ void (irq_clear) (struct ata_port );
	to struct ata_host_set.		to struct ata_host_set.
	</para>		</para>
	<para>		<para>
	Most legacy IDE drivers use ata_interrupt() for the		Most legacy IDE drivers use ata_sff_interrupt() for the
	irq_handler hook, which scans all ports in the host_set,		irq_handler hook, which scans all ports in the host_set,
	determines which queued command was active (if any), and calls		determines which queued command was active (if any), and calls
	ata_host_intr(ap,qc).		ata_sff_host_intr(ap,qc).
	</para>		</para>
	<para>		<para>
	Most legacy IDE drivers use ata_bmdma_irq_clear() for the		Most legacy IDE drivers use ata_sff_irq_clear() for the
	irq_clear() hook, which simply clears the interrupt and error		irq_clear() hook, which simply clears the interrupt and error
	flags in the DMA status register.		flags in the DMA status register.
	</para>		</para>
	@@ -496,10 +483,6 @@ void (host_stop) (struct ata_host_set host_set);
	data from port at this time.		data from port at this time.
	</para>		</para>
	<para>		<para>
	Many drivers use ata_port_stop() as this hook, which frees the
	PRD table.
	</para>
	<para>
	->host_stop() is called after all ->port_stop() calls		->host_stop() is called after all ->port_stop() calls
	have completed. The hook must finalize hardware shutdown, release DMA		have completed. The hook must finalize hardware shutdown, release DMA
	and other resources, etc.		and other resources, etc.

Documentation/i2c/writing-clients

+5 −0

Original line number	Original line	Diff line number	Diff line
	@@ -74,6 +74,11 @@ structure at all. You should use this to keep device-specific data.
	/* retrieve the value */		/* retrieve the value */
	void i2c_get_clientdata(const struct i2c_client client);		void i2c_get_clientdata(const struct i2c_client client);

			Note that starting with kernel 2.6.34, you don't have to set the `data' field
			to NULL in remove() or if probe() failed anymore. The i2c-core does this
			automatically on these occasions. Those are also the only times the core will
			touch this field.


	Accessing the client		Accessing the client
	====================		====================

Documentation/input/elantech.txt

+4 −4

Original line number	Original line	Diff line number	Diff line
	@@ -333,14 +333,14 @@ byte 0:
	byte 1:		byte 1:

	bit 7 6 5 4 3 2 1 0		bit 7 6 5 4 3 2 1 0
	x15 x14 x13 x12 x11 x10 x9 x8		. . . . . x10 x9 x8

	byte 2:		byte 2:

	bit 7 6 5 4 3 2 1 0		bit 7 6 5 4 3 2 1 0
	x7 x6 x5 x4 x4 x2 x1 x0		x7 x6 x5 x4 x4 x2 x1 x0

	x15..x0 = absolute x value (horizontal)		x10..x0 = absolute x value (horizontal)

	byte 3:		byte 3:

	@@ -350,14 +350,14 @@ byte 3:
	byte 4:		byte 4:

	bit 7 6 5 4 3 2 1 0		bit 7 6 5 4 3 2 1 0
	y15 y14 y13 y12 y11 y10 y8 y8		. . . . . . y9 y8

	byte 5:		byte 5:

	bit 7 6 5 4 3 2 1 0		bit 7 6 5 4 3 2 1 0
	y7 y6 y5 y4 y3 y2 y1 y0		y7 y6 y5 y4 y3 y2 y1 y0

	y15..y0 = absolute y value (vertical)		y9..y0 = absolute y value (vertical)


	4.2.2 Two finger touch		4.2.2 Two finger touch

Documentation/spi/spidev_test.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -58,7 +58,7 @@ static void transfer(int fd)
	};		};

	ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr);		ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr);
	if (ret == 1)		if (ret < 1)
	pabort("can't send spi message");		pabort("can't send spi message");

	for (ret = 0; ret < ARRAY_SIZE(tx); ret++) {		for (ret = 0; ret < ARRAY_SIZE(tx); ret++) {

arch/arm/plat-omap/include/plat/usb.h

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -46,7 +46,7 @@ struct ehci_hcd_omap_platform_data {
	struct omap_musb_board_data {		struct omap_musb_board_data {
	u8 interface_type;		u8 interface_type;
	u8 mode;		u8 mode;
	u8 power;		u16 power;
	};		};

	enum musb_interface {MUSB_INTERFACE_ULPI, MUSB_INTERFACE_UTMI};		enum musb_interface {MUSB_INTERFACE_ULPI, MUSB_INTERFACE_UTMI};